Wollastonite
Wollastonite is an oxide-based engineering ceramic. It has a very low thermal conductivity and a moderately low dielectric strength among oxide-based engineering ceramics. The graph bars on the material properties cards below compare wollastonite to other oxide-based engineering ceramics (top) and the entire database (bottom). A full bar means this is the highest value in the relevant set. A half-full bar means it's 50% of the highest, and so on.
Thermal Properties
Maximum Temperature: Mechanical
1200 °C 2190 °F
Thermal Conductivity
0.8 W/m-K 0.46 BTU/h-ft-°F
Electrical Properties
Dielectric Constant (Relative Permittivity) At 1 MHz
3.5
Dielectric Strength (Breakdown Potential)
6.0 kV/mm 0.23 V/mil
Other Material Properties
Compressive (Crushing) Strength
260 MPa 38 x 103 psi
Density
2.8 g/cm3 170 lb/ft3
Flexural Strength
100 MPa 15 x 103 psi
Followup Questions
Further Reading
ASTM C242: Standard Terminology of Ceramic Whitewares and Related Products
Ceramics and Composites: Processing Methods, Narottam P. Bansal and Aldo R. Boccaccini (editors), 2012
Springer Handbook of Condensed Matter and Materials Data, W. Martienssen and H. Warlimont (editors), 2005
CRC Materials Science and Engineering Handbook, 4th ed., James F. Shackelford et al. (editors), 2015